Fitted floorboard extension



FIG. 1 is a perspective view of a fitted floorboard extension showing my new design;

FIG. 2 is a right side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

Broken lines showing in FIGS. 1,2,3, and 5 are for environmental purposes and form no part of the claimed design. 

The ornamental design for a fitted floorboard extension, as shown and described. 